diff --git a/browser/components/enterprisepolicies/Policies.jsm b/browser/components/enterprisepolicies/Policies.jsm
index 210ac088f68e..041400da0114 100644
--- a/browser/components/enterprisepolicies/Policies.jsm
+++ b/browser/components/enterprisepolicies/Policies.jsm
@@ -181,6 +181,14 @@ var Policies = {
     }
   },
 
+  "DisableBuiltinPDFViewer": {
+    onBeforeUIStartup(manager, param) {
+      if (param) {
+        manager.disallowFeature("PDFjs");
+      }
+    }
+  },
+
   "DisablePocket": {
     onBeforeAddons(manager, param) {
       if (param) {
diff --git a/browser/components/enterprisepolicies/schemas/policies-schema.json b/browser/components/enterprisepolicies/schemas/policies-schema.json
index c00b2d44bd9f..c20f8a047793 100644
--- a/browser/components/enterprisepolicies/schemas/policies-schema.json
+++ b/browser/components/enterprisepolicies/schemas/policies-schema.json
@@ -142,6 +142,13 @@
       "type": "boolean"
     },
 
+    "DisableBuiltinPDFViewer": {
+      "description": "Disables PDF.js, which displays PDFs within Firefox.",
+      "first_available": "60.0",
+
+      "type": "boolean"
+    },
+
     "DisablePocket": {
       "description": "Prevents ability to save webpages to Pocket.",
       "first_available": "60.0",
diff --git a/browser/components/enterprisepolicies/tests/browser/browser.ini b/browser/components/enterprisepolicies/tests/browser/browser.ini
index 626b693f5cd2..8ef7e76e1570 100644
--- a/browser/components/enterprisepolicies/tests/browser/browser.ini
+++ b/browser/components/enterprisepolicies/tests/browser/browser.ini
@@ -28,6 +28,7 @@ support-files =
 [browser_policy_disable_fxaccounts.js]
 [browser_policy_disable_fxscreenshots.js]
 [browser_policy_disable_masterpassword.js]
+[browser_policy_disable_pdfjs.js]
 [browser_policy_disable_pocket.js]
 [browser_policy_disable_privatebrowsing.js]
 [browser_policy_disable_shield.js]
diff --git a/browser/components/enterprisepolicies/tests/browser/browser_policy_disable_pdfjs.js b/browser/components/enterprisepolicies/tests/browser/browser_policy_disable_pdfjs.js
new file mode 100644
index 000000000000..bb63775b9572
--- /dev/null
+++ b/browser/components/enterprisepolicies/tests/browser/browser_policy_disable_pdfjs.js
@@ -0,0 +1,17 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+const {PdfJs} = ChromeUtils.import("resource://pdf.js/PdfJs.jsm", {});
+
+add_task(async function test_disable_pdfjs() {
+  is(PdfJs.enabled, true, "PDFjs should be enabled before policy runs");
+
+  await setupPolicyEngineWithJson({
+    "policies": {
+      "DisableBuiltinPDFViewer": true
+    }
+  });
+
+  is(PdfJs.enabled, false, "PDFjs should be disabled after policy runs");
+});
diff --git a/browser/extensions/pdfjs/content/PdfJs.jsm b/browser/extensions/pdfjs/content/PdfJs.jsm
index 1a3ef5a1267b..f3d849ce573e 100644
--- a/browser/extensions/pdfjs/content/PdfJs.jsm
+++ b/browser/extensions/pdfjs/content/PdfJs.jsm
@@ -337,6 +337,10 @@ var PdfJs = {
    * @return {boolean} Whether or not it's enabled.
    */
   get enabled() {
+    if (Services.policies && !Services.policies.isAllowed("PDFjs")) {
+      return false;
+    }
+
     if (!Services.prefs.getBoolPref(PREF_ENABLED_CACHE_INITIALIZED, false)) {
       // If we just updated, and the cache hasn't been initialized, then we
       // can't assume a default state, and need to synchronously initialize